CN211545823U

CN211545823U - Forward forklift

Info

Publication number: CN211545823U
Application number: CN201922128392.0U
Authority: CN
Inventors: 臧灿平
Original assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Current assignee: Suzhou Pioneer Material Handling Equipment and Technology Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-09-22
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses an antedisplacement fork truck. The utility model relates to a antedisplacement fork truck, include: the vehicle comprises a vehicle body main body, a front wheel assembly, a drive axle and a drive axle locking device; the front wheel assembly is arranged at the front end of the vehicle body main body; the drive axle comprises a drive wheel structure and a balance wheel structure, wherein an upper end pin hole of the drive wheel structure is connected with a left end pin hole of an upper connecting rod through a drive wheel pin shaft, a right end pin hole of the upper connecting rod is connected with the automobile body main body through an upper connecting rod pin shaft, and the lower end of the drive wheel structure is connected with a left end pin hole of a lower connecting rod through a lower connecting rod pin shaft. The utility model has the advantages that: the up-and-down floating action of the drive axle and the balance wheel is locked under the conditions of high-position stacking operation and sharp turning, so that the shaking and the inclination of the whole vehicle are reduced, and the stability and the safety of the whole vehicle are improved.

Description

Forward forklift

Technical Field

The utility model relates to an antedisplacement fork truck.

Background

The forward forklift is suitable for high-order stacking operation in narrow goods shelves pass through, the maximum lifting height can reach 7500mm, the fork can realize the front and back translation, the front and back inclination, the left and right translation and other functional actions, and the advantages of wide application range of the counter weight forklift working device and small turning radius of the stacking truck body are combined. In order to improve the road surface adaptability, the driving axle has better passing capacity under the condition of uneven road surface, and the driving axle (see CN206569977) is designed, enables the driving wheel and the balance wheel to be respectively hinged with a vehicle body through two connecting rods, respectively has certain distance up-and-down floating capacity, and respectively absorbs the impact of the road surface through two springs. However, when the forklift carries out high-order stacking operation and sharp turning, the floating drive axle aggravates the shaking amplitude of the whole forklift, the forklift body can be greatly inclined, the stability and the safety of the forklift body are affected, and the rear drive axle is expected to be in a rigid state at the moment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an antedisplacement fork truck, with the action locking of the fluctuation of transaxle and stabilizer under high-order stack operation and sharp turn circumstances, reduce rocking and the slope of whole car, improve whole car stability and security.

In order to solve the technical problem, the utility model provides an antedisplacement fork truck, include: the vehicle comprises a vehicle body main body, a front wheel assembly, a drive axle and a drive axle locking device; the front wheel assembly is arranged at the front end of the vehicle body main body;

the drive axle comprises a drive wheel structure and a balance wheel structure, wherein an upper end pin hole of the drive wheel structure is connected with a left end pin hole of an upper connecting rod through a drive wheel pin shaft, a right end pin hole of the upper connecting rod is connected with the vehicle body main body through an upper connecting rod pin shaft, a lower end of the drive wheel structure is connected with a left end pin hole of a lower connecting rod through a lower connecting rod pin shaft, a left end pin hole of the balance wheel structure is connected with a middle pin hole of the lower connecting rod and the vehicle body main body through a balance wheel pin shaft, and a right end of the balance wheel structure is connected with a right end of the lower connecting;

the drive axle locking device is arranged at the rear end of the vehicle body main body; the drive axle locking device comprises a damping oil cylinder and an electromagnetic valve; two ports of the electromagnetic valve are respectively connected with a rod cavity and a rodless cavity of the damping oil cylinder through pipelines; the upper end of the damping oil cylinder is hinged with the vehicle body main body, and the lower end of the damping oil cylinder is hinged with the middle of the upper connecting rod.

In one embodiment, the front wheel assembly includes two front wheels.

In one embodiment, the front wheel assembly includes a front wheel.

In one embodiment, the rod chamber is at the lower end of the damping cylinder.

In one embodiment, the rodless chamber is at a lower end of the damping cylinder.

In one embodiment, the number of the balance wheel springs is two.

In one embodiment, a lower link spring for connecting the left end of the lower link and the vehicle body is further arranged between the left end of the lower link and the vehicle body.

In one embodiment, the lower end of the lower link spring is connected with the left end of the lower link, the upper end of the lower link spring is connected with an adjusting bolt through a lower link spring seat, the adjusting bolt is arranged on a threaded hole of an adjusting bolt mounting plate and is locked through a locking nut, and the adjusting bolt mounting plate is fixed on the vehicle body.

In one embodiment, the jack bolt mounting plate is welded to the vehicle body.

In one embodiment, a gas bag type accumulator is connected between the rod cavity of the damping oil cylinder and the electromagnetic valve.

The utility model has the advantages that:

the up-and-down floating action of the drive axle and the balance wheel is locked under the conditions of high-position stacking operation and sharp turning, so that the shaking and the inclination of the whole vehicle are reduced, and the stability and the safety of the whole vehicle are improved.

Drawings

Fig. 1 is a schematic view of the whole structure of the reach forklift of the present invention. (note that the body is a simplified schematic.

Fig. 2 is a partial schematic view of the reach truck of the present invention.

Fig. 3 is a side view of fig. 2.

Fig. 4 is the oil circuit structure diagram of the drive axle locking device in the reach fork truck.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1 to 4, a reach truck includes: a vehicle body 100, a front wheel assembly 200, a drive axle, and a drive axle locking device; the front wheel assembly is arranged at the front end of the vehicle body main body;

the drive axle comprises a drive wheel structure 310 and a balance wheel structure 320, wherein an upper end pin hole of the drive wheel structure is connected with a left end pin hole of an upper connecting rod 340 through a drive wheel pin shaft 330, a right end pin hole of the upper connecting rod is connected with the car body main body through an upper connecting rod pin shaft 350, a lower end of the drive wheel structure is connected with a left end pin hole of a lower connecting rod 370 through a lower connecting rod pin shaft 360, a left end pin hole of the balance wheel structure is connected with a middle pin hole of the lower connecting rod and the car body main body through a balance wheel pin shaft 380, and a right end of the balance wheel structure is connected with a right end of the lower connecting rod through;

the drive axle locking device is arranged at the rear end of the vehicle body main body; the drive axle locking device comprises a damping oil cylinder 410 and an electromagnetic valve 420; two ports of the electromagnetic valve are respectively connected with a rod cavity 421 and a rodless cavity 422 of the damping oil cylinder through pipelines; the upper end of the damping oil cylinder is hinged with the vehicle body main body, and the lower end of the damping oil cylinder is hinged with the middle of the upper connecting rod.

The utility model has the advantages that:

Specifically, the non-attraction and attraction of the electromagnetic valve can release the damping oil cylinder (the oil circuit of the rod cavity is communicated with the oil circuit of the rodless cavity) and lock the damping oil cylinder (the oil circuit of the rod cavity is not communicated with the oil circuit of the rodless cavity). The release and locking of the damping oil cylinder enable the connection state of the drive axle and the vehicle body to be switched between elasticity and rigidity. When high-order stack operation, when lifting up the operation, perhaps under the tight turn condition, the solenoid valve is closed, damping cylinder is in the locking state this moment, hydraulic oil can't freely flow between the pole chamber and the no pole chamber of damping cylinder through the pipeline, with the action locking of floating from top to bottom of drive wheel and stabilizer, through the articulated of damping cylinder and last connecting rod, because the lock of damping cylinder dies, go up the connecting rod and can not move, the drive wheel structure lock dies, reduce rocking and the slope of whole car, improve whole car stability and security. In the normal driving process, the electromagnetic valve is in a non-suction state, the damping oil cylinder is in a release state at the moment, and hydraulic oil can freely flow between the rod cavity and the rodless cavity of the damping oil cylinder through the pipeline, so that the driving wheel and the balance wheel can float up and down, the adaptability of the forklift to the road surface is improved, and meanwhile, the impact of the forklift to the road surface can be absorbed.

In one embodiment, the front wheel assembly includes two front wheels.

In one embodiment, the front wheel assembly includes a front wheel.

In one embodiment, the rod chamber is at the lower end of the damping cylinder.

In one embodiment, the number of the balance wheel springs is two.

In one embodiment, a lower link spring 510 is disposed between the left end of the lower link and the vehicle body for connecting the left end of the lower link and the vehicle body.

In one embodiment, the jack bolt mounting plate is welded to the vehicle body.

The balance wheel spring can absorb the impact transmitted by the balance wheel on the road surface, the lower connecting rod spring can absorb the impact transmitted by the driving wheel on the road surface, so that the impact transmitted to the frame on the road surface is smaller, and the driving comfort can be improved.

The compression amount of the lower connecting rod spring is adjusted through the adjusting bolt arranged on the adjusting bolt mounting plate, the pressure of the lower connecting rod spring on the lower connecting rod is changed, and therefore the load of the driving wheel is adjusted; when the front-moving forklift works on a common road surface, the adjusting bolt is rotated anticlockwise, the compression amount of the lower connecting rod spring is reduced, the load of the driving wheel is reduced, and the service life of the driving wheel is prolonged; when the forward forklift works on the pavement of the environment of the refrigeration house, the adjusting bolt is rotated clockwise, the compression amount of the lower connecting rod spring is increased, the load of the driving wheel is increased, and the problem of slipping of the driving wheel is solved.

Specific structures and principles can be referred to CN206569977, which is not described herein again, and no relevant references are made in the drawings.

In one embodiment, a gas bag type accumulator 430 is connected between the rod cavity of the damping oil cylinder and the solenoid valve. When the damping cylinder is released, the airbag type accumulator can absorb the impact from the road surface. When the damping hydraulic cylinder is used, the damping cylinder needs to be filled with hydraulic oil in advance, and then the air bag type energy accumulator is connected with the electromagnetic valve.

The air bag type energy accumulator mainly comprises a shell, a leather bag, an inflation valve and an oil inlet valve. A typical feature of the gas-bag accumulator is an unfolded, flexible rubber bladder inside a steel shell. The open end of the leather bag is connected with an air valve at the inflating side of the steel shell. The poppet valve remains normally open under the action of the spring to regulate the flow of oil through the oil charge. The top or bottom assembly of the airbag accumulator is serviceable, thereby providing optimal flexibility. The principle of the airbag type energy accumulator belongs to the common knowledge, and the description of the application is omitted.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A reach truck, comprising: the vehicle comprises a vehicle body main body, a front wheel assembly, a drive axle and a drive axle locking device; the front wheel assembly is arranged at the front end of the vehicle body main body;

2. The reach truck of claim 1, wherein the front wheel assembly includes two front wheels.

3. The reach truck of claim 1, wherein the front wheel assembly includes a front wheel.

4. The reach truck of claim 1, wherein the rod chamber is at a lower end of the damping cylinder.

5. The reach truck of claim 1, wherein the rodless chamber is at a lower end of the damping cylinder.

6. The reach truck of claim 1, wherein the number of balance wheel springs is two.

7. The reach truck of claim 1, further comprising a lower link spring connecting the left end of the lower link and the truck body.

8. The reach truck of claim 7, wherein the lower end of the lower link spring is connected to the left end of the lower link, and the upper end of the lower link spring is connected to an adjusting bolt through a lower link spring seat, the adjusting bolt being mounted in a threaded hole of an adjusting bolt mounting plate and locked by a lock nut, the adjusting bolt mounting plate being fixed to the truck body.

9. The reach truck of claim 8, wherein the jack bolt mounting plate is welded to the truck body.

10. The reach truck of claim 1, wherein a bladder accumulator is connected between the rod chamber of the damping cylinder and the solenoid valve.